CircleAvatar Widget

 import "package:flutter/material.dart";

void main()
{
  runApp(const FlutterApp());
}

class FlutterApp extends StatelessWidget
{
  const FlutterApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: "Hello",
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.brown,
      ),
      home: const DashBoardScreen(),
    );
  }
}

class DashBoardScreen extends StatelessWidget
{
  const DashBoardScreen({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: const Text("Hello HEER",
            style: TextStyle(fontWeight: FontWeight.bold),
          ),
          centerTitle: true,
          backgroundColor: Colors.grey,
        ),

        /* Here below -> body: with Container */
        /*body: Center(
          child: Container(
            width: 300,
            height: 300,
            child: CircleAvatar(
              backgroundImage: AssetImage("assets/images/flutter_transparent.JPG"),
              backgroundColor: Colors.lightGreen,
            ),
          ),
        ),*/

      /* Here below -> body: without Container. Using radius: as shown below */
      /*body: Center(
        child: CircleAvatar(
          child: Text("Name", style: TextStyle(color: Colors.black, fontSize: 60),),
          //backgroundImage: AssetImage("assets/images/flutter_transparent.JPG"),
          backgroundColor: Colors.brown,
          //radius: 200,
          //minRadius: 40,
          maxRadius: 200,
        ),
      ),*/

      body: SingleChildScrollView(
        child: Center(
          child: CircleAvatar(
            maxRadius: 200,
            child: Container(
              width: 150,
              height: 150,
              child: Column(
                children: [
                  Container(
                    width: 120,
                      height: 120,
                      child: Image.asset("assets/images/flutter_transparent.JPG"),
                  ),
                  const Text("FLUTTER"),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}